JPH0251243U - - Google Patents
Info
- Publication number
- JPH0251243U JPH0251243U JP12729588U JP12729588U JPH0251243U JP H0251243 U JPH0251243 U JP H0251243U JP 12729588 U JP12729588 U JP 12729588U JP 12729588 U JP12729588 U JP 12729588U JP H0251243 U JPH0251243 U JP H0251243U
- Authority
- JP
- Japan
- Prior art keywords
- bit
- hollow rod
- hole
- hollow
- vent hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 claims 1
- 238000005553 drilling Methods 0.000 claims 1
- 230000002265 prevention Effects 0.000 claims 1
Landscapes
- Blast Furnaces (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12729588U JPH0251243U (de) | 1988-09-30 | 1988-09-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12729588U JPH0251243U (de) | 1988-09-30 | 1988-09-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0251243U true JPH0251243U (de) | 1990-04-10 |
Family
ID=31379599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12729588U Pending JPH0251243U (de) | 1988-09-30 | 1988-09-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0251243U (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100338647B1 (ko) * | 1997-10-23 | 2002-08-21 | 주식회사 포스코 | 용광로출선구일발개공용이중비트 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62107008A (ja) * | 1985-10-31 | 1987-05-18 | Sumitomo Metal Ind Ltd | 高炉出銑口開孔機 |
-
1988
- 1988-09-30 JP JP12729588U patent/JPH0251243U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62107008A (ja) * | 1985-10-31 | 1987-05-18 | Sumitomo Metal Ind Ltd | 高炉出銑口開孔機 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100338647B1 (ko) * | 1997-10-23 | 2002-08-21 | 주식회사 포스코 | 용광로출선구일발개공용이중비트 |